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請問強者們 If a fair die is rolled 12 times. What is the probability that the sum of the rolls is equal to 30 exactly ? 這題該如何分析解題呢? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 118.170.116.103
KAINTS:29C13? 07/09 21:02
KAINTS:29C12....剛打錯 07/09 21:03
KAINTS:29C12/6^12 07/09 21:04
qazqazqaz:樓上...似乎有錯耶...我當初也是這樣分析 但是不對.. 07/09 23:52
KAINTS:答案是?? 07/09 23:54
KAINTS:我忘記扣掉大於六的了.. 這題有點難= = 07/10 00:37